2 * linux/drivers/scsi/esas2r/esas2r_main.c
3 * For use with ATTO ExpressSAS R6xx SAS/SATA RAID controllers
5 * Copyright (c) 2001-2013 ATTO Technology, Inc.
6 * (mailto:linuxdrivers@attotech.com)
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version 2
11 * of the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
19 * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
20 * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
21 * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
22 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
23 * solely responsible for determining the appropriateness of using and
24 * distributing the Program and assumes all risks associated with its
25 * exercise of rights under this Agreement, including but not limited to
26 * the risks and costs of program errors, damage to or loss of data,
27 * programs or equipment, and unavailability or interruption of operations.
29 * DISCLAIMER OF LIABILITY
30 * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
31 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
33 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
34 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
35 * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
36 * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
38 * You should have received a copy of the GNU General Public License
39 * along with this program; if not, write to the Free Software
40 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
46 MODULE_DESCRIPTION(ESAS2R_DRVR_NAME ": " ESAS2R_LONGNAME " driver");
47 MODULE_AUTHOR("ATTO Technology, Inc.");
48 MODULE_LICENSE("GPL");
49 MODULE_VERSION(ESAS2R_VERSION_STR);
51 /* global definitions */
53 static int found_adapters;
54 struct esas2r_adapter *esas2r_adapters[MAX_ADAPTERS];
56 #define ESAS2R_VDA_EVENT_PORT1 54414
57 #define ESAS2R_VDA_EVENT_PORT2 54415
58 #define ESAS2R_VDA_EVENT_SOCK_COUNT 2
60 static struct esas2r_adapter *esas2r_adapter_from_kobj(struct kobject *kobj)
62 struct device *dev = container_of(kobj, struct device, kobj);
63 struct Scsi_Host *host = class_to_shost(dev);
65 return (struct esas2r_adapter *)host->hostdata;
68 static ssize_t read_fw(struct file *file, struct kobject *kobj,
69 struct bin_attribute *attr,
70 char *buf, loff_t off, size_t count)
72 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
74 return esas2r_read_fw(a, buf, off, count);
77 static ssize_t write_fw(struct file *file, struct kobject *kobj,
78 struct bin_attribute *attr,
79 char *buf, loff_t off, size_t count)
81 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
83 return esas2r_write_fw(a, buf, off, count);
86 static ssize_t read_fs(struct file *file, struct kobject *kobj,
87 struct bin_attribute *attr,
88 char *buf, loff_t off, size_t count)
90 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
92 return esas2r_read_fs(a, buf, off, count);
95 static ssize_t write_fs(struct file *file, struct kobject *kobj,
96 struct bin_attribute *attr,
97 char *buf, loff_t off, size_t count)
99 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
100 int length = min(sizeof(struct esas2r_ioctl_fs), count);
103 result = esas2r_write_fs(a, buf, off, count);
111 static ssize_t read_vda(struct file *file, struct kobject *kobj,
112 struct bin_attribute *attr,
113 char *buf, loff_t off, size_t count)
115 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
117 return esas2r_read_vda(a, buf, off, count);
120 static ssize_t write_vda(struct file *file, struct kobject *kobj,
121 struct bin_attribute *attr,
122 char *buf, loff_t off, size_t count)
124 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
126 return esas2r_write_vda(a, buf, off, count);
129 static ssize_t read_live_nvram(struct file *file, struct kobject *kobj,
130 struct bin_attribute *attr,
131 char *buf, loff_t off, size_t count)
133 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
134 int length = min_t(size_t, sizeof(struct esas2r_sas_nvram), PAGE_SIZE);
136 memcpy(buf, a->nvram, length);
140 static ssize_t write_live_nvram(struct file *file, struct kobject *kobj,
141 struct bin_attribute *attr,
142 char *buf, loff_t off, size_t count)
144 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
145 struct esas2r_request *rq;
146 int result = -EFAULT;
148 rq = esas2r_alloc_request(a);
152 if (esas2r_write_params(a, rq, (struct esas2r_sas_nvram *)buf))
155 esas2r_free_request(a, rq);
160 static ssize_t read_default_nvram(struct file *file, struct kobject *kobj,
161 struct bin_attribute *attr,
162 char *buf, loff_t off, size_t count)
164 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
166 esas2r_nvram_get_defaults(a, (struct esas2r_sas_nvram *)buf);
168 return sizeof(struct esas2r_sas_nvram);
171 static ssize_t read_hw(struct file *file, struct kobject *kobj,
172 struct bin_attribute *attr,
173 char *buf, loff_t off, size_t count)
175 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
176 int length = min_t(size_t, sizeof(struct atto_ioctl), PAGE_SIZE);
178 if (!a->local_atto_ioctl)
181 if (handle_hba_ioctl(a, a->local_atto_ioctl) != IOCTL_SUCCESS)
184 memcpy(buf, a->local_atto_ioctl, length);
189 static ssize_t write_hw(struct file *file, struct kobject *kobj,
190 struct bin_attribute *attr,
191 char *buf, loff_t off, size_t count)
193 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj);
194 int length = min(sizeof(struct atto_ioctl), count);
196 if (!a->local_atto_ioctl) {
197 a->local_atto_ioctl = kmalloc(sizeof(struct atto_ioctl),
199 if (a->local_atto_ioctl == NULL) {
200 esas2r_log(ESAS2R_LOG_WARN,
201 "write_hw kzalloc failed for %zu bytes",
202 sizeof(struct atto_ioctl));
207 memset(a->local_atto_ioctl, 0, sizeof(struct atto_ioctl));
208 memcpy(a->local_atto_ioctl, buf, length);
213 #define ESAS2R_RW_BIN_ATTR(_name) \
214 struct bin_attribute bin_attr_ ## _name = { \
216 { .name = __stringify(_name), .mode = S_IRUSR | S_IWUSR }, \
218 .read = read_ ## _name, \
219 .write = write_ ## _name }
221 ESAS2R_RW_BIN_ATTR(fw);
222 ESAS2R_RW_BIN_ATTR(fs);
223 ESAS2R_RW_BIN_ATTR(vda);
224 ESAS2R_RW_BIN_ATTR(hw);
225 ESAS2R_RW_BIN_ATTR(live_nvram);
227 struct bin_attribute bin_attr_default_nvram = {
228 .attr = { .name = "default_nvram", .mode = S_IRUGO },
230 .read = read_default_nvram,
234 static struct scsi_host_template driver_template = {
235 .module = THIS_MODULE,
236 .show_info = esas2r_show_info,
237 .name = ESAS2R_LONGNAME,
239 .ioctl = esas2r_ioctl,
240 .queuecommand = esas2r_queuecommand,
241 .eh_abort_handler = esas2r_eh_abort,
242 .eh_device_reset_handler = esas2r_device_reset,
243 .eh_bus_reset_handler = esas2r_bus_reset,
244 .eh_host_reset_handler = esas2r_host_reset,
245 .eh_target_reset_handler = esas2r_target_reset,
248 .sg_tablesize = SG_CHUNK_SIZE,
250 ESAS2R_DEFAULT_CMD_PER_LUN,
252 .unchecked_isa_dma = 0,
254 .proc_name = ESAS2R_DRVR_NAME,
255 .change_queue_depth = scsi_change_queue_depth,
256 .max_sectors = 0xFFFF,
259 int sgl_page_size = 512;
260 module_param(sgl_page_size, int, 0);
261 MODULE_PARM_DESC(sgl_page_size,
262 "Scatter/gather list (SGL) page size in number of S/G "
263 "entries. If your application is doing a lot of very large "
264 "transfers, you may want to increase the SGL page size. "
267 int num_sg_lists = 1024;
268 module_param(num_sg_lists, int, 0);
269 MODULE_PARM_DESC(num_sg_lists,
270 "Number of scatter/gather lists. Default 1024.");
272 int sg_tablesize = SG_CHUNK_SIZE;
273 module_param(sg_tablesize, int, 0);
274 MODULE_PARM_DESC(sg_tablesize,
275 "Maximum number of entries in a scatter/gather table.");
277 int num_requests = 256;
278 module_param(num_requests, int, 0);
279 MODULE_PARM_DESC(num_requests,
280 "Number of requests. Default 256.");
282 int num_ae_requests = 4;
283 module_param(num_ae_requests, int, 0);
284 MODULE_PARM_DESC(num_ae_requests,
285 "Number of VDA asynchronous event requests. Default 4.");
287 int cmd_per_lun = ESAS2R_DEFAULT_CMD_PER_LUN;
288 module_param(cmd_per_lun, int, 0);
289 MODULE_PARM_DESC(cmd_per_lun,
290 "Maximum number of commands per LUN. Default "
291 DEFINED_NUM_TO_STR(ESAS2R_DEFAULT_CMD_PER_LUN) ".");
294 module_param(can_queue, int, 0);
295 MODULE_PARM_DESC(can_queue,
296 "Maximum number of commands per adapter. Default 128.");
298 int esas2r_max_sectors = 0xFFFF;
299 module_param(esas2r_max_sectors, int, 0);
300 MODULE_PARM_DESC(esas2r_max_sectors,
301 "Maximum number of disk sectors in a single data transfer. "
302 "Default 65535 (largest possible setting).");
304 int interrupt_mode = 1;
305 module_param(interrupt_mode, int, 0);
306 MODULE_PARM_DESC(interrupt_mode,
307 "Defines the interrupt mode to use. 0 for legacy"
308 ", 1 for MSI. Default is MSI (1).");
310 static const struct pci_device_id
311 esas2r_pci_table[] = {
312 { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x0049,
315 { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004A,
318 { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004B,
321 { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004C,
324 { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004D,
327 { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004E,
335 MODULE_DEVICE_TABLE(pci, esas2r_pci_table);
338 esas2r_probe(struct pci_dev *pcid, const struct pci_device_id *id);
341 esas2r_remove(struct pci_dev *pcid);
343 static struct pci_driver
344 esas2r_pci_driver = {
345 .name = ESAS2R_DRVR_NAME,
346 .id_table = esas2r_pci_table,
347 .probe = esas2r_probe,
348 .remove = esas2r_remove,
349 .suspend = esas2r_suspend,
350 .resume = esas2r_resume,
353 static int esas2r_probe(struct pci_dev *pcid,
354 const struct pci_device_id *id)
356 struct Scsi_Host *host = NULL;
357 struct esas2r_adapter *a;
360 size_t host_alloc_size = sizeof(struct esas2r_adapter)
362 1) * sizeof(struct esas2r_request);
364 esas2r_log_dev(ESAS2R_LOG_DEBG, &(pcid->dev),
365 "esas2r_probe() 0x%02x 0x%02x 0x%02x 0x%02x",
368 pcid->subsystem_vendor,
369 pcid->subsystem_device);
371 esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev),
372 "before pci_enable_device() "
374 pcid->enable_cnt.counter);
376 err = pci_enable_device(pcid);
378 esas2r_log_dev(ESAS2R_LOG_CRIT, &(pcid->dev),
379 "pci_enable_device() FAIL (%d)",
384 esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev),
385 "pci_enable_device() OK");
386 esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev),
387 "after pci_enable_device() enable_cnt: %d",
388 pcid->enable_cnt.counter);
390 host = scsi_host_alloc(&driver_template, host_alloc_size);
392 esas2r_log(ESAS2R_LOG_CRIT, "scsi_host_alloc() FAIL");
396 memset(host->hostdata, 0, host_alloc_size);
398 a = (struct esas2r_adapter *)host->hostdata;
400 esas2r_log(ESAS2R_LOG_INFO, "scsi_host_alloc() OK host: %p", host);
402 /* override max LUN and max target id */
404 host->max_id = ESAS2R_MAX_ID + 1;
407 /* we can handle 16-byte CDbs */
409 host->max_cmd_len = 16;
411 host->can_queue = can_queue;
412 host->cmd_per_lun = cmd_per_lun;
413 host->this_id = host->max_id + 1;
414 host->max_channel = 0;
415 host->unique_id = found_adapters;
416 host->sg_tablesize = sg_tablesize;
417 host->max_sectors = esas2r_max_sectors;
419 /* set to bus master for BIOses that don't do it for us */
421 esas2r_log(ESAS2R_LOG_INFO, "pci_set_master() called");
423 pci_set_master(pcid);
425 if (!esas2r_init_adapter(host, pcid, found_adapters)) {
426 esas2r_log(ESAS2R_LOG_CRIT,
427 "unable to initialize device at PCI bus %x:%x",
431 esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev),
432 "scsi_host_put() called");
440 esas2r_log(ESAS2R_LOG_INFO, "pci_set_drvdata(%p, %p) called", pcid,
443 pci_set_drvdata(pcid, host);
445 esas2r_log(ESAS2R_LOG_INFO, "scsi_add_host() called");
447 err = scsi_add_host(host, &pcid->dev);
450 esas2r_log(ESAS2R_LOG_CRIT, "scsi_add_host returned %d", err);
451 esas2r_log_dev(ESAS2R_LOG_CRIT, &(host->shost_gendev),
452 "scsi_add_host() FAIL");
454 esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev),
455 "scsi_host_put() called");
459 esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev),
460 "pci_set_drvdata(%p, NULL) called",
463 pci_set_drvdata(pcid, NULL);
469 esas2r_fw_event_on(a);
471 esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev),
472 "scsi_scan_host() called");
474 scsi_scan_host(host);
476 /* Add sysfs binary files */
477 if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_fw))
478 esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev),
479 "Failed to create sysfs binary file: fw");
481 a->sysfs_fw_created = 1;
483 if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_fs))
484 esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev),
485 "Failed to create sysfs binary file: fs");
487 a->sysfs_fs_created = 1;
489 if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_vda))
490 esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev),
491 "Failed to create sysfs binary file: vda");
493 a->sysfs_vda_created = 1;
495 if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_hw))
496 esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev),
497 "Failed to create sysfs binary file: hw");
499 a->sysfs_hw_created = 1;
501 if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_live_nvram))
502 esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev),
503 "Failed to create sysfs binary file: live_nvram");
505 a->sysfs_live_nvram_created = 1;
507 if (sysfs_create_bin_file(&host->shost_dev.kobj,
508 &bin_attr_default_nvram))
509 esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev),
510 "Failed to create sysfs binary file: default_nvram");
512 a->sysfs_default_nvram_created = 1;
519 static void esas2r_remove(struct pci_dev *pdev)
521 struct Scsi_Host *host = pci_get_drvdata(pdev);
522 struct esas2r_adapter *a = (struct esas2r_adapter *)host->hostdata;
524 esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev),
525 "esas2r_remove(%p) called; "
529 esas2r_kill_adapter(a->index);
533 static int __init esas2r_init(void)
537 esas2r_log(ESAS2R_LOG_INFO, "%s called", __func__);
539 /* verify valid parameters */
542 esas2r_log(ESAS2R_LOG_WARN,
543 "warning: can_queue must be at least 1, value "
546 } else if (can_queue > 2048) {
547 esas2r_log(ESAS2R_LOG_WARN,
548 "warning: can_queue must be no larger than 2048, "
553 if (cmd_per_lun < 1) {
554 esas2r_log(ESAS2R_LOG_WARN,
555 "warning: cmd_per_lun must be at least 1, value "
558 } else if (cmd_per_lun > 2048) {
559 esas2r_log(ESAS2R_LOG_WARN,
560 "warning: cmd_per_lun must be no larger than "
561 "2048, value forced.");
565 if (sg_tablesize < 32) {
566 esas2r_log(ESAS2R_LOG_WARN,
567 "warning: sg_tablesize must be at least 32, "
572 if (esas2r_max_sectors < 1) {
573 esas2r_log(ESAS2R_LOG_WARN,
574 "warning: esas2r_max_sectors must be at least "
576 esas2r_max_sectors = 1;
577 } else if (esas2r_max_sectors > 0xffff) {
578 esas2r_log(ESAS2R_LOG_WARN,
579 "warning: esas2r_max_sectors must be no larger "
580 "than 0xffff, value forced.");
581 esas2r_max_sectors = 0xffff;
584 sgl_page_size &= ~(ESAS2R_SGL_ALIGN - 1);
586 if (sgl_page_size < SGL_PG_SZ_MIN)
587 sgl_page_size = SGL_PG_SZ_MIN;
588 else if (sgl_page_size > SGL_PG_SZ_MAX)
589 sgl_page_size = SGL_PG_SZ_MAX;
591 if (num_sg_lists < NUM_SGL_MIN)
592 num_sg_lists = NUM_SGL_MIN;
593 else if (num_sg_lists > NUM_SGL_MAX)
594 num_sg_lists = NUM_SGL_MAX;
596 if (num_requests < NUM_REQ_MIN)
597 num_requests = NUM_REQ_MIN;
598 else if (num_requests > NUM_REQ_MAX)
599 num_requests = NUM_REQ_MAX;
601 if (num_ae_requests < NUM_AE_MIN)
602 num_ae_requests = NUM_AE_MIN;
603 else if (num_ae_requests > NUM_AE_MAX)
604 num_ae_requests = NUM_AE_MAX;
606 /* set up other globals */
608 for (i = 0; i < MAX_ADAPTERS; i++)
609 esas2r_adapters[i] = NULL;
611 return pci_register_driver(&esas2r_pci_driver);
614 /* Handle ioctl calls to "/proc/scsi/esas2r/ATTOnode" */
615 static const struct file_operations esas2r_proc_fops = {
616 .compat_ioctl = compat_ptr_ioctl,
617 .unlocked_ioctl = esas2r_proc_ioctl,
620 static const struct proc_ops esas2r_proc_ops = {
621 .proc_ioctl = esas2r_proc_ioctl,
623 .proc_compat_ioctl = compat_ptr_ioctl,
627 static struct Scsi_Host *esas2r_proc_host;
628 static int esas2r_proc_major;
630 long esas2r_proc_ioctl(struct file *fp, unsigned int cmd, unsigned long arg)
632 return esas2r_ioctl_handler(esas2r_proc_host->hostdata,
633 cmd, (void __user *)arg);
636 static void __exit esas2r_exit(void)
638 esas2r_log(ESAS2R_LOG_INFO, "%s called", __func__);
640 if (esas2r_proc_major > 0) {
641 esas2r_log(ESAS2R_LOG_INFO, "unregister proc");
643 remove_proc_entry(ATTONODE_NAME,
644 esas2r_proc_host->hostt->proc_dir);
645 unregister_chrdev(esas2r_proc_major, ESAS2R_DRVR_NAME);
647 esas2r_proc_major = 0;
650 esas2r_log(ESAS2R_LOG_INFO, "pci_unregister_driver() called");
652 pci_unregister_driver(&esas2r_pci_driver);
655 int esas2r_show_info(struct seq_file *m, struct Scsi_Host *sh)
657 struct esas2r_adapter *a = (struct esas2r_adapter *)sh->hostdata;
659 struct esas2r_target *t;
662 esas2r_log(ESAS2R_LOG_DEBG, "esas2r_show_info (%p,%d)", m, sh->host_no);
664 seq_printf(m, ESAS2R_LONGNAME "\n"
665 "Driver version: "ESAS2R_VERSION_STR "\n"
666 "Flash version: %s\n"
667 "Firmware version: %s\n"
668 "Copyright "ESAS2R_COPYRIGHT_YEARS "\n"
669 "http://www.attotech.com\n"
672 a->fw_rev[0] ? a->fw_rev : "(none)");
675 seq_printf(m, "Adapter information:\n"
676 "--------------------\n"
678 "SAS address: %02X%02X%02X%02X:%02X%02X%02X%02X\n",
679 esas2r_get_model_name(a),
680 a->nvram->sas_addr[0],
681 a->nvram->sas_addr[1],
682 a->nvram->sas_addr[2],
683 a->nvram->sas_addr[3],
684 a->nvram->sas_addr[4],
685 a->nvram->sas_addr[5],
686 a->nvram->sas_addr[6],
687 a->nvram->sas_addr[7]);
690 "Discovered devices:\n"
693 "---------------\n");
695 for (t = a->targetdb; t < a->targetdb_end; t++)
696 if (t->buffered_target_state == TS_PRESENT) {
697 seq_printf(m, " %3d %3d\n",
699 (u16)(uintptr_t)(t - a->targetdb));
703 seq_puts(m, "none\n");
710 const char *esas2r_info(struct Scsi_Host *sh)
712 struct esas2r_adapter *a = (struct esas2r_adapter *)sh->hostdata;
713 static char esas2r_info_str[512];
715 esas2r_log_dev(ESAS2R_LOG_INFO, &(sh->shost_gendev),
716 "esas2r_info() called");
719 * if we haven't done so already, register as a char driver
720 * and stick a node under "/proc/scsi/esas2r/ATTOnode"
723 if (esas2r_proc_major <= 0) {
724 esas2r_proc_host = sh;
726 esas2r_proc_major = register_chrdev(0, ESAS2R_DRVR_NAME,
729 esas2r_log_dev(ESAS2R_LOG_DEBG, &(sh->shost_gendev),
730 "register_chrdev (major %d)",
733 if (esas2r_proc_major > 0) {
734 struct proc_dir_entry *pde;
736 pde = proc_create(ATTONODE_NAME, 0,
741 esas2r_log_dev(ESAS2R_LOG_WARN,
743 "failed to create_proc_entry");
744 esas2r_proc_major = -1;
749 sprintf(esas2r_info_str,
750 ESAS2R_LONGNAME " (bus 0x%02X, device 0x%02X, IRQ 0x%02X)"
751 " driver version: "ESAS2R_VERSION_STR " firmware version: "
753 a->pcid->bus->number, a->pcid->devfn, a->pcid->irq,
754 a->fw_rev[0] ? a->fw_rev : "(none)");
756 return esas2r_info_str;
759 /* Callback for building a request scatter/gather list */
760 static u32 get_physaddr_from_sgc(struct esas2r_sg_context *sgc, u64 *addr)
764 if (likely(sgc->cur_offset == sgc->exp_offset)) {
766 * the normal case: caller used all bytes from previous call, so
767 * expected offset is the same as the current offset.
770 if (sgc->sgel_count < sgc->num_sgel) {
771 /* retrieve next segment, except for first time */
772 if (sgc->exp_offset > (u8 *)0) {
773 /* advance current segment */
774 sgc->cur_sgel = sg_next(sgc->cur_sgel);
779 len = sg_dma_len(sgc->cur_sgel);
780 (*addr) = sg_dma_address(sgc->cur_sgel);
782 /* save the total # bytes returned to caller so far */
783 sgc->exp_offset += len;
788 } else if (sgc->cur_offset < sgc->exp_offset) {
790 * caller did not use all bytes from previous call. need to
791 * compute the address based on current segment.
794 len = sg_dma_len(sgc->cur_sgel);
795 (*addr) = sg_dma_address(sgc->cur_sgel);
797 sgc->exp_offset -= len;
799 /* calculate PA based on prev segment address and offsets */
801 (sgc->cur_offset - sgc->exp_offset);
803 sgc->exp_offset += len;
805 /* re-calculate length based on offset */
807 sgc->exp_offset - sgc->cur_offset);
808 } else { /* if ( sgc->cur_offset > sgc->exp_offset ) */
810 * we don't expect the caller to skip ahead.
811 * cur_offset will never exceed the len we return
819 int esas2r_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
821 struct esas2r_adapter *a =
822 (struct esas2r_adapter *)cmd->device->host->hostdata;
823 struct esas2r_request *rq;
824 struct esas2r_sg_context sgc;
827 /* Assume success, if it fails we will fix the result later. */
828 cmd->result = DID_OK << 16;
830 if (unlikely(test_bit(AF_DEGRADED_MODE, &a->flags))) {
831 cmd->result = DID_NO_CONNECT << 16;
836 rq = esas2r_alloc_request(a);
837 if (unlikely(rq == NULL)) {
838 esas2r_debug("esas2r_alloc_request failed");
839 return SCSI_MLQUEUE_HOST_BUSY;
843 bufflen = scsi_bufflen(cmd);
845 if (likely(bufflen != 0)) {
846 if (cmd->sc_data_direction == DMA_TO_DEVICE)
847 rq->vrq->scsi.flags |= cpu_to_le32(FCP_CMND_WRD);
848 else if (cmd->sc_data_direction == DMA_FROM_DEVICE)
849 rq->vrq->scsi.flags |= cpu_to_le32(FCP_CMND_RDD);
852 memcpy(rq->vrq->scsi.cdb, cmd->cmnd, cmd->cmd_len);
853 rq->vrq->scsi.length = cpu_to_le32(bufflen);
854 rq->target_id = cmd->device->id;
855 rq->vrq->scsi.flags |= cpu_to_le32(cmd->device->lun);
856 rq->sense_buf = cmd->sense_buffer;
857 rq->sense_len = SCSI_SENSE_BUFFERSIZE;
859 esas2r_sgc_init(&sgc, a, rq, NULL);
861 sgc.length = bufflen;
862 sgc.cur_offset = NULL;
864 sgc.cur_sgel = scsi_sglist(cmd);
865 sgc.exp_offset = NULL;
866 sgc.num_sgel = scsi_dma_map(cmd);
869 if (unlikely(sgc.num_sgel < 0)) {
870 esas2r_free_request(a, rq);
871 return SCSI_MLQUEUE_HOST_BUSY;
874 sgc.get_phys_addr = (PGETPHYSADDR)get_physaddr_from_sgc;
876 if (unlikely(!esas2r_build_sg_list(a, rq, &sgc))) {
878 esas2r_free_request(a, rq);
879 return SCSI_MLQUEUE_HOST_BUSY;
882 esas2r_debug("start request %p to %d:%d\n", rq, (int)cmd->device->id,
883 (int)cmd->device->lun);
885 esas2r_start_request(a, rq);
890 static void complete_task_management_request(struct esas2r_adapter *a,
891 struct esas2r_request *rq)
893 (*rq->task_management_status_ptr) = rq->req_stat;
894 esas2r_free_request(a, rq);
898 * Searches the specified queue for the specified queue for the command
901 * Return 0 on failure, 1 if command was not found, 2 if command was found
903 static int esas2r_check_active_queue(struct esas2r_adapter *a,
904 struct esas2r_request **abort_request,
905 struct scsi_cmnd *cmd,
906 struct list_head *queue)
909 struct esas2r_request *ar = *abort_request;
910 struct esas2r_request *rq;
911 struct list_head *element, *next;
913 list_for_each_safe(element, next, queue) {
915 rq = list_entry(element, struct esas2r_request, req_list);
917 if (rq->cmd == cmd) {
919 /* Found the request. See what to do with it. */
920 if (queue == &a->active_list) {
922 * We are searching the active queue, which
923 * means that we need to send an abort request
926 ar = esas2r_alloc_request(a);
928 esas2r_log_dev(ESAS2R_LOG_WARN,
929 &(a->host->shost_gendev),
930 "unable to allocate an abort request for cmd %p",
932 return 0; /* Failure */
936 * Task management request must be formatted
940 ar->vrq->scsi.length = 0;
941 ar->target_id = rq->target_id;
942 ar->vrq->scsi.flags |= cpu_to_le32(
943 (u8)le32_to_cpu(rq->vrq->scsi.flags));
945 memset(ar->vrq->scsi.cdb, 0,
946 sizeof(ar->vrq->scsi.cdb));
948 ar->vrq->scsi.flags |= cpu_to_le32(
950 ar->vrq->scsi.u.abort_handle =
951 rq->vrq->scsi.handle;
954 * The request is pending but not active on
955 * the firmware. Just free it now and we'll
956 * report the successful abort below.
958 list_del_init(&rq->req_list);
959 esas2r_free_request(a, rq);
969 return 1; /* Not found */
971 return 2; /* found */
976 int esas2r_eh_abort(struct scsi_cmnd *cmd)
978 struct esas2r_adapter *a =
979 (struct esas2r_adapter *)cmd->device->host->hostdata;
980 struct esas2r_request *abort_request = NULL;
982 struct list_head *queue;
985 esas2r_log(ESAS2R_LOG_INFO, "eh_abort (%p)", cmd);
987 if (test_bit(AF_DEGRADED_MODE, &a->flags)) {
988 cmd->result = DID_ABORT << 16;
990 scsi_set_resid(cmd, 0);
997 spin_lock_irqsave(&a->queue_lock, flags);
1000 * Run through the defer and active queues looking for the request
1004 queue = &a->defer_list;
1008 result = esas2r_check_active_queue(a, &abort_request, cmd, queue);
1011 spin_unlock_irqrestore(&a->queue_lock, flags);
1013 } else if (result == 2 && (queue == &a->defer_list)) {
1014 queue = &a->active_list;
1015 goto check_active_queue;
1018 spin_unlock_irqrestore(&a->queue_lock, flags);
1020 if (abort_request) {
1021 u8 task_management_status = RS_PENDING;
1024 * the request is already active, so we need to tell
1025 * the firmware to abort it and wait for the response.
1028 abort_request->comp_cb = complete_task_management_request;
1029 abort_request->task_management_status_ptr =
1030 &task_management_status;
1032 esas2r_start_request(a, abort_request);
1034 if (atomic_read(&a->disable_cnt) == 0)
1035 esas2r_do_deferred_processes(a);
1037 while (task_management_status == RS_PENDING)
1041 * Once we get here, the original request will have been
1042 * completed by the firmware and the abort request will have
1043 * been cleaned up. we're done!
1050 * If we get here, either we found the inactive request and
1051 * freed it, or we didn't find it at all. Either way, success!
1054 cmd->result = DID_ABORT << 16;
1056 scsi_set_resid(cmd, 0);
1058 cmd->scsi_done(cmd);
1063 static int esas2r_host_bus_reset(struct scsi_cmnd *cmd, bool host_reset)
1065 struct esas2r_adapter *a =
1066 (struct esas2r_adapter *)cmd->device->host->hostdata;
1068 if (test_bit(AF_DEGRADED_MODE, &a->flags))
1072 esas2r_reset_adapter(a);
1074 esas2r_reset_bus(a);
1076 /* above call sets the AF_OS_RESET flag. wait for it to clear. */
1078 while (test_bit(AF_OS_RESET, &a->flags)) {
1081 if (test_bit(AF_DEGRADED_MODE, &a->flags))
1085 if (test_bit(AF_DEGRADED_MODE, &a->flags))
1091 int esas2r_host_reset(struct scsi_cmnd *cmd)
1093 esas2r_log(ESAS2R_LOG_INFO, "host_reset (%p)", cmd);
1095 return esas2r_host_bus_reset(cmd, true);
1098 int esas2r_bus_reset(struct scsi_cmnd *cmd)
1100 esas2r_log(ESAS2R_LOG_INFO, "bus_reset (%p)", cmd);
1102 return esas2r_host_bus_reset(cmd, false);
1105 static int esas2r_dev_targ_reset(struct scsi_cmnd *cmd, bool target_reset)
1107 struct esas2r_adapter *a =
1108 (struct esas2r_adapter *)cmd->device->host->hostdata;
1109 struct esas2r_request *rq;
1110 u8 task_management_status = RS_PENDING;
1113 if (test_bit(AF_DEGRADED_MODE, &a->flags))
1117 rq = esas2r_alloc_request(a);
1120 esas2r_log(ESAS2R_LOG_CRIT,
1121 "unable to allocate a request for a "
1122 "target reset (%d)!",
1125 esas2r_log(ESAS2R_LOG_CRIT,
1126 "unable to allocate a request for a "
1127 "device reset (%d:%llu)!",
1136 rq->target_id = cmd->device->id;
1137 rq->vrq->scsi.flags |= cpu_to_le32(cmd->device->lun);
1138 rq->req_stat = RS_PENDING;
1140 rq->comp_cb = complete_task_management_request;
1141 rq->task_management_status_ptr = &task_management_status;
1144 esas2r_debug("issuing target reset (%p) to id %d", rq,
1146 completed = esas2r_send_task_mgmt(a, rq, 0x20);
1148 esas2r_debug("issuing device reset (%p) to id %d lun %d", rq,
1149 cmd->device->id, cmd->device->lun);
1150 completed = esas2r_send_task_mgmt(a, rq, 0x10);
1154 /* Task management cmd completed right away, need to free it. */
1156 esas2r_free_request(a, rq);
1159 * Wait for firmware to complete the request. Completion
1160 * callback will free it.
1162 while (task_management_status == RS_PENDING)
1166 if (test_bit(AF_DEGRADED_MODE, &a->flags))
1169 if (task_management_status == RS_BUSY) {
1171 * Busy, probably because we are flashing. Wait a bit and
1181 int esas2r_device_reset(struct scsi_cmnd *cmd)
1183 esas2r_log(ESAS2R_LOG_INFO, "device_reset (%p)", cmd);
1185 return esas2r_dev_targ_reset(cmd, false);
1189 int esas2r_target_reset(struct scsi_cmnd *cmd)
1191 esas2r_log(ESAS2R_LOG_INFO, "target_reset (%p)", cmd);
1193 return esas2r_dev_targ_reset(cmd, true);
1196 void esas2r_log_request_failure(struct esas2r_adapter *a,
1197 struct esas2r_request *rq)
1199 u8 reqstatus = rq->req_stat;
1201 if (reqstatus == RS_SUCCESS)
1204 if (rq->vrq->scsi.function == VDA_FUNC_SCSI) {
1205 if (reqstatus == RS_SCSI_ERROR) {
1206 if (rq->func_rsp.scsi_rsp.sense_len >= 13) {
1207 esas2r_log(ESAS2R_LOG_WARN,
1208 "request failure - SCSI error %x ASC:%x ASCQ:%x CDB:%x",
1209 rq->sense_buf[2], rq->sense_buf[12],
1211 rq->vrq->scsi.cdb[0]);
1213 esas2r_log(ESAS2R_LOG_WARN,
1214 "request failure - SCSI error CDB:%x\n",
1215 rq->vrq->scsi.cdb[0]);
1217 } else if ((rq->vrq->scsi.cdb[0] != INQUIRY
1218 && rq->vrq->scsi.cdb[0] != REPORT_LUNS)
1219 || (reqstatus != RS_SEL
1220 && reqstatus != RS_SEL2)) {
1221 if ((reqstatus == RS_UNDERRUN) &&
1222 (rq->vrq->scsi.cdb[0] == INQUIRY)) {
1223 /* Don't log inquiry underruns */
1225 esas2r_log(ESAS2R_LOG_WARN,
1226 "request failure - cdb:%x reqstatus:%d target:%d",
1227 rq->vrq->scsi.cdb[0], reqstatus,
1234 void esas2r_wait_request(struct esas2r_adapter *a, struct esas2r_request *rq)
1239 starttime = jiffies_to_msecs(jiffies);
1240 timeout = rq->timeout ? rq->timeout : 5000;
1243 esas2r_polled_interrupt(a);
1245 if (rq->req_stat != RS_STARTED)
1248 schedule_timeout_interruptible(msecs_to_jiffies(100));
1250 if ((jiffies_to_msecs(jiffies) - starttime) > timeout) {
1251 esas2r_hdebug("request TMO");
1254 rq->req_stat = RS_TIMEOUT;
1256 esas2r_local_reset_adapter(a);
1262 u32 esas2r_map_data_window(struct esas2r_adapter *a, u32 addr_lo)
1264 u32 offset = addr_lo & (MW_DATA_WINDOW_SIZE - 1);
1265 u32 base = addr_lo & -(signed int)MW_DATA_WINDOW_SIZE;
1267 if (a->window_base != base) {
1268 esas2r_write_register_dword(a, MVR_PCI_WIN1_REMAP,
1269 base | MVRPW1R_ENABLE);
1270 esas2r_flush_register_dword(a, MVR_PCI_WIN1_REMAP);
1271 a->window_base = base;
1277 /* Read a block of data from chip memory */
1278 bool esas2r_read_mem_block(struct esas2r_adapter *a,
1290 iatvr = (from & -(signed int)MW_DATA_WINDOW_SIZE);
1292 esas2r_map_data_window(a, iatvr);
1294 offset = from & (MW_DATA_WINDOW_SIZE - 1);
1297 if (len > MW_DATA_WINDOW_SIZE - offset)
1298 len = MW_DATA_WINDOW_SIZE - offset;
1304 *end++ = esas2r_read_data_byte(a, offset);
1312 void esas2r_nuxi_mgt_data(u8 function, void *data)
1314 struct atto_vda_grp_info *g;
1315 struct atto_vda_devinfo *d;
1316 struct atto_vdapart_info *p;
1317 struct atto_vda_dh_info *h;
1318 struct atto_vda_metrics_info *m;
1319 struct atto_vda_schedule_info *s;
1320 struct atto_vda_buzzer_info *b;
1324 case VDAMGT_BUZZER_INFO:
1325 case VDAMGT_BUZZER_SET:
1327 b = (struct atto_vda_buzzer_info *)data;
1329 b->duration = le32_to_cpu(b->duration);
1332 case VDAMGT_SCHEDULE_INFO:
1333 case VDAMGT_SCHEDULE_EVENT:
1335 s = (struct atto_vda_schedule_info *)data;
1337 s->id = le32_to_cpu(s->id);
1341 case VDAMGT_DEV_INFO:
1342 case VDAMGT_DEV_CLEAN:
1343 case VDAMGT_DEV_PT_INFO:
1344 case VDAMGT_DEV_FEATURES:
1345 case VDAMGT_DEV_PT_FEATURES:
1346 case VDAMGT_DEV_OPERATION:
1348 d = (struct atto_vda_devinfo *)data;
1350 d->capacity = le64_to_cpu(d->capacity);
1351 d->block_size = le32_to_cpu(d->block_size);
1352 d->ses_dev_index = le16_to_cpu(d->ses_dev_index);
1353 d->target_id = le16_to_cpu(d->target_id);
1354 d->lun = le16_to_cpu(d->lun);
1355 d->features = le16_to_cpu(d->features);
1358 case VDAMGT_GRP_INFO:
1359 case VDAMGT_GRP_CREATE:
1360 case VDAMGT_GRP_DELETE:
1361 case VDAMGT_ADD_STORAGE:
1362 case VDAMGT_MEMBER_ADD:
1363 case VDAMGT_GRP_COMMIT:
1364 case VDAMGT_GRP_REBUILD:
1365 case VDAMGT_GRP_COMMIT_INIT:
1366 case VDAMGT_QUICK_RAID:
1367 case VDAMGT_GRP_FEATURES:
1368 case VDAMGT_GRP_COMMIT_INIT_AUTOMAP:
1369 case VDAMGT_QUICK_RAID_INIT_AUTOMAP:
1370 case VDAMGT_SPARE_LIST:
1371 case VDAMGT_SPARE_ADD:
1372 case VDAMGT_SPARE_REMOVE:
1373 case VDAMGT_LOCAL_SPARE_ADD:
1374 case VDAMGT_GRP_OPERATION:
1376 g = (struct atto_vda_grp_info *)data;
1378 g->capacity = le64_to_cpu(g->capacity);
1379 g->block_size = le32_to_cpu(g->block_size);
1380 g->interleave = le32_to_cpu(g->interleave);
1381 g->features = le16_to_cpu(g->features);
1383 for (i = 0; i < 32; i++)
1384 g->members[i] = le16_to_cpu(g->members[i]);
1388 case VDAMGT_PART_INFO:
1389 case VDAMGT_PART_MAP:
1390 case VDAMGT_PART_UNMAP:
1391 case VDAMGT_PART_AUTOMAP:
1392 case VDAMGT_PART_SPLIT:
1393 case VDAMGT_PART_MERGE:
1395 p = (struct atto_vdapart_info *)data;
1397 p->part_size = le64_to_cpu(p->part_size);
1398 p->start_lba = le32_to_cpu(p->start_lba);
1399 p->block_size = le32_to_cpu(p->block_size);
1400 p->target_id = le16_to_cpu(p->target_id);
1403 case VDAMGT_DEV_HEALTH_REQ:
1405 h = (struct atto_vda_dh_info *)data;
1407 h->med_defect_cnt = le32_to_cpu(h->med_defect_cnt);
1408 h->info_exc_cnt = le32_to_cpu(h->info_exc_cnt);
1411 case VDAMGT_DEV_METRICS:
1413 m = (struct atto_vda_metrics_info *)data;
1415 for (i = 0; i < 32; i++)
1416 m->dev_indexes[i] = le16_to_cpu(m->dev_indexes[i]);
1425 void esas2r_nuxi_cfg_data(u8 function, void *data)
1427 struct atto_vda_cfg_init *ci;
1431 case VDA_CFG_GET_INIT:
1432 case VDA_CFG_GET_INIT2:
1434 ci = (struct atto_vda_cfg_init *)data;
1436 ci->date_time.year = le16_to_cpu(ci->date_time.year);
1437 ci->sgl_page_size = le32_to_cpu(ci->sgl_page_size);
1438 ci->vda_version = le32_to_cpu(ci->vda_version);
1439 ci->epoch_time = le32_to_cpu(ci->epoch_time);
1440 ci->ioctl_tunnel = le32_to_cpu(ci->ioctl_tunnel);
1441 ci->num_targets_backend = le32_to_cpu(ci->num_targets_backend);
1449 void esas2r_nuxi_ae_data(union atto_vda_ae *ae)
1451 struct atto_vda_ae_raid *r = &ae->raid;
1452 struct atto_vda_ae_lu *l = &ae->lu;
1454 switch (ae->hdr.bytype) {
1455 case VDAAE_HDR_TYPE_RAID:
1457 r->dwflags = le32_to_cpu(r->dwflags);
1460 case VDAAE_HDR_TYPE_LU:
1462 l->dwevent = le32_to_cpu(l->dwevent);
1463 l->wphys_target_id = le16_to_cpu(l->wphys_target_id);
1464 l->id.tgtlun.wtarget_id = le16_to_cpu(l->id.tgtlun.wtarget_id);
1466 if (l->hdr.bylength >= offsetof(struct atto_vda_ae_lu, id)
1467 + sizeof(struct atto_vda_ae_lu_tgt_lun_raid)) {
1468 l->id.tgtlun_raid.dwinterleave
1469 = le32_to_cpu(l->id.tgtlun_raid.dwinterleave);
1470 l->id.tgtlun_raid.dwblock_size
1471 = le32_to_cpu(l->id.tgtlun_raid.dwblock_size);
1476 case VDAAE_HDR_TYPE_DISK:
1482 void esas2r_free_request(struct esas2r_adapter *a, struct esas2r_request *rq)
1484 unsigned long flags;
1486 esas2r_rq_destroy_request(rq, a);
1487 spin_lock_irqsave(&a->request_lock, flags);
1488 list_add(&rq->comp_list, &a->avail_request);
1489 spin_unlock_irqrestore(&a->request_lock, flags);
1492 struct esas2r_request *esas2r_alloc_request(struct esas2r_adapter *a)
1494 struct esas2r_request *rq;
1495 unsigned long flags;
1497 spin_lock_irqsave(&a->request_lock, flags);
1499 if (unlikely(list_empty(&a->avail_request))) {
1500 spin_unlock_irqrestore(&a->request_lock, flags);
1504 rq = list_first_entry(&a->avail_request, struct esas2r_request,
1506 list_del(&rq->comp_list);
1507 spin_unlock_irqrestore(&a->request_lock, flags);
1508 esas2r_rq_init_request(rq, a);
1514 void esas2r_complete_request_cb(struct esas2r_adapter *a,
1515 struct esas2r_request *rq)
1517 esas2r_debug("completing request %p\n", rq);
1519 scsi_dma_unmap(rq->cmd);
1521 if (unlikely(rq->req_stat != RS_SUCCESS)) {
1522 esas2r_debug("[%x STATUS %x:%x (%x)]", rq->target_id,
1524 rq->func_rsp.scsi_rsp.scsi_stat,
1528 ((esas2r_req_status_to_error(rq->req_stat) << 16)
1529 | (rq->func_rsp.scsi_rsp.scsi_stat & STATUS_MASK));
1531 if (rq->req_stat == RS_UNDERRUN)
1532 scsi_set_resid(rq->cmd,
1533 le32_to_cpu(rq->func_rsp.scsi_rsp.
1536 scsi_set_resid(rq->cmd, 0);
1539 rq->cmd->scsi_done(rq->cmd);
1541 esas2r_free_request(a, rq);
1544 /* Run tasklet to handle stuff outside of interrupt context. */
1545 void esas2r_adapter_tasklet(unsigned long context)
1547 struct esas2r_adapter *a = (struct esas2r_adapter *)context;
1549 if (unlikely(test_bit(AF2_TIMER_TICK, &a->flags2))) {
1550 clear_bit(AF2_TIMER_TICK, &a->flags2);
1551 esas2r_timer_tick(a);
1554 if (likely(test_bit(AF2_INT_PENDING, &a->flags2))) {
1555 clear_bit(AF2_INT_PENDING, &a->flags2);
1556 esas2r_adapter_interrupt(a);
1559 if (esas2r_is_tasklet_pending(a))
1560 esas2r_do_tasklet_tasks(a);
1562 if (esas2r_is_tasklet_pending(a)
1563 || (test_bit(AF2_INT_PENDING, &a->flags2))
1564 || (test_bit(AF2_TIMER_TICK, &a->flags2))) {
1565 clear_bit(AF_TASKLET_SCHEDULED, &a->flags);
1566 esas2r_schedule_tasklet(a);
1568 clear_bit(AF_TASKLET_SCHEDULED, &a->flags);
1572 static void esas2r_timer_callback(struct timer_list *t);
1574 void esas2r_kickoff_timer(struct esas2r_adapter *a)
1576 timer_setup(&a->timer, esas2r_timer_callback, 0);
1578 a->timer.expires = jiffies +
1579 msecs_to_jiffies(100);
1581 add_timer(&a->timer);
1584 static void esas2r_timer_callback(struct timer_list *t)
1586 struct esas2r_adapter *a = from_timer(a, t, timer);
1588 set_bit(AF2_TIMER_TICK, &a->flags2);
1590 esas2r_schedule_tasklet(a);
1592 esas2r_kickoff_timer(a);
1596 * Firmware events need to be handled outside of interrupt context
1597 * so we schedule a delayed_work to handle them.
1601 esas2r_free_fw_event(struct esas2r_fw_event_work *fw_event)
1603 unsigned long flags;
1604 struct esas2r_adapter *a = fw_event->a;
1606 spin_lock_irqsave(&a->fw_event_lock, flags);
1607 list_del(&fw_event->list);
1609 spin_unlock_irqrestore(&a->fw_event_lock, flags);
1613 esas2r_fw_event_off(struct esas2r_adapter *a)
1615 unsigned long flags;
1617 spin_lock_irqsave(&a->fw_event_lock, flags);
1618 a->fw_events_off = 1;
1619 spin_unlock_irqrestore(&a->fw_event_lock, flags);
1623 esas2r_fw_event_on(struct esas2r_adapter *a)
1625 unsigned long flags;
1627 spin_lock_irqsave(&a->fw_event_lock, flags);
1628 a->fw_events_off = 0;
1629 spin_unlock_irqrestore(&a->fw_event_lock, flags);
1632 static void esas2r_add_device(struct esas2r_adapter *a, u16 target_id)
1635 struct scsi_device *scsi_dev;
1637 scsi_dev = scsi_device_lookup(a->host, 0, target_id, 0);
1644 "scsi device already exists at id %d", target_id);
1646 scsi_device_put(scsi_dev);
1652 "scsi_add_device() called for 0:%d:0",
1655 ret = scsi_add_device(a->host, 0, target_id, 0);
1661 "scsi_add_device failed with %d for id %d",
1667 static void esas2r_remove_device(struct esas2r_adapter *a, u16 target_id)
1669 struct scsi_device *scsi_dev;
1671 scsi_dev = scsi_device_lookup(a->host, 0, target_id, 0);
1674 scsi_device_set_state(scsi_dev, SDEV_OFFLINE);
1680 "scsi_remove_device() called for 0:%d:0",
1683 scsi_remove_device(scsi_dev);
1689 "scsi_device_put() called");
1691 scsi_device_put(scsi_dev);
1695 &(a->host->shost_gendev),
1696 "no target found at id %d",
1702 * Sends a firmware asynchronous event to anyone who happens to be
1703 * listening on the defined ATTO VDA event ports.
1705 static void esas2r_send_ae_event(struct esas2r_fw_event_work *fw_event)
1707 struct esas2r_vda_ae *ae = (struct esas2r_vda_ae *)fw_event->data;
1710 switch (ae->vda_ae.hdr.bytype) {
1711 case VDAAE_HDR_TYPE_RAID:
1712 type = "RAID group state change";
1715 case VDAAE_HDR_TYPE_LU:
1716 type = "Mapped destination LU change";
1719 case VDAAE_HDR_TYPE_DISK:
1720 type = "Physical disk inventory change";
1723 case VDAAE_HDR_TYPE_RESET:
1724 type = "Firmware reset";
1727 case VDAAE_HDR_TYPE_LOG_INFO:
1728 type = "Event Log message (INFO level)";
1731 case VDAAE_HDR_TYPE_LOG_WARN:
1732 type = "Event Log message (WARN level)";
1735 case VDAAE_HDR_TYPE_LOG_CRIT:
1736 type = "Event Log message (CRIT level)";
1739 case VDAAE_HDR_TYPE_LOG_FAIL:
1740 type = "Event Log message (FAIL level)";
1743 case VDAAE_HDR_TYPE_NVC:
1744 type = "NVCache change";
1747 case VDAAE_HDR_TYPE_TLG_INFO:
1748 type = "Time stamped log message (INFO level)";
1751 case VDAAE_HDR_TYPE_TLG_WARN:
1752 type = "Time stamped log message (WARN level)";
1755 case VDAAE_HDR_TYPE_TLG_CRIT:
1756 type = "Time stamped log message (CRIT level)";
1759 case VDAAE_HDR_TYPE_PWRMGT:
1760 type = "Power management";
1763 case VDAAE_HDR_TYPE_MUTE:
1764 type = "Mute button pressed";
1767 case VDAAE_HDR_TYPE_DEV:
1768 type = "Device attribute change";
1776 esas2r_log(ESAS2R_LOG_WARN,
1777 "An async event of type \"%s\" was received from the firmware. The event contents are:",
1779 esas2r_log_hexdump(ESAS2R_LOG_WARN, &ae->vda_ae,
1780 ae->vda_ae.hdr.bylength);
1785 esas2r_firmware_event_work(struct work_struct *work)
1787 struct esas2r_fw_event_work *fw_event =
1788 container_of(work, struct esas2r_fw_event_work, work.work);
1790 struct esas2r_adapter *a = fw_event->a;
1792 u16 target_id = *(u16 *)&fw_event->data[0];
1794 if (a->fw_events_off)
1797 switch (fw_event->type) {
1799 break; /* do nothing */
1801 case fw_event_lun_change:
1802 esas2r_remove_device(a, target_id);
1803 esas2r_add_device(a, target_id);
1806 case fw_event_present:
1807 esas2r_add_device(a, target_id);
1810 case fw_event_not_present:
1811 esas2r_remove_device(a, target_id);
1814 case fw_event_vda_ae:
1815 esas2r_send_ae_event(fw_event);
1820 esas2r_free_fw_event(fw_event);
1823 void esas2r_queue_fw_event(struct esas2r_adapter *a,
1824 enum fw_event_type type,
1828 struct esas2r_fw_event_work *fw_event;
1829 unsigned long flags;
1831 fw_event = kzalloc(sizeof(struct esas2r_fw_event_work), GFP_ATOMIC);
1833 esas2r_log(ESAS2R_LOG_WARN,
1834 "esas2r_queue_fw_event failed to alloc");
1838 if (type == fw_event_vda_ae) {
1839 struct esas2r_vda_ae *ae =
1840 (struct esas2r_vda_ae *)fw_event->data;
1842 ae->signature = ESAS2R_VDA_EVENT_SIG;
1843 ae->bus_number = a->pcid->bus->number;
1844 ae->devfn = a->pcid->devfn;
1845 memcpy(&ae->vda_ae, data, sizeof(ae->vda_ae));
1847 memcpy(fw_event->data, data, data_sz);
1850 fw_event->type = type;
1853 spin_lock_irqsave(&a->fw_event_lock, flags);
1854 list_add_tail(&fw_event->list, &a->fw_event_list);
1855 INIT_DELAYED_WORK(&fw_event->work, esas2r_firmware_event_work);
1856 queue_delayed_work_on(
1857 smp_processor_id(), a->fw_event_q, &fw_event->work,
1858 msecs_to_jiffies(1));
1859 spin_unlock_irqrestore(&a->fw_event_lock, flags);
1862 void esas2r_target_state_changed(struct esas2r_adapter *a, u16 targ_id,
1865 if (state == TS_LUN_CHANGE)
1866 esas2r_queue_fw_event(a, fw_event_lun_change, &targ_id,
1868 else if (state == TS_PRESENT)
1869 esas2r_queue_fw_event(a, fw_event_present, &targ_id,
1871 else if (state == TS_NOT_PRESENT)
1872 esas2r_queue_fw_event(a, fw_event_not_present, &targ_id,
1876 /* Translate status to a Linux SCSI mid-layer error code */
1877 int esas2r_req_status_to_error(u8 req_stat)
1884 * NOTE: SCSI mid-layer wants a good status for a SCSI error, because
1885 * it will check the scsi_stat value in the completion anyway.
1892 return DID_NO_CONNECT;
1901 return DID_BUS_BUSY;
1904 /* everything else is just an error. */
1909 module_init(esas2r_init);
1910 module_exit(esas2r_exit);